feat(core): create alluvial chart

packages/angular/src/alluvial-chart.component.ts

@@ -0,0 +1,34 @@
+import {
+	Component,
+	AfterViewInit
+} from "@angular/core";
+
+import { BaseChart } from "./base-chart.component";
+
+import { AlluvialChart } from "@carbon/charts";
+
+/**
+ * Wrapper around `Alluvial` in carbon charts library
+ *
+ * Most functions just call their equivalent from the chart library.
+ */
+@Component({
+	selector: "ibm-alluvial-chart",
+	template: ``
+})
+export class AlluvialChartComponent extends BaseChart implements AfterViewInit {
+	/**
+	 * Runs after view init to create a chart, attach it to `elementRef` and draw it.
+	 */
+	ngAfterViewInit() {
+		this.chart = new AlluvialChart(
+			this.elementRef.nativeElement,
+			{
+				data: this.data,
+				options: this.options
+			}
+		);
+
+		Object.assign(this, this.chart);
+	}
+}

packages/angular/src/charts.module.ts

@@ -2,6 +2,7 @@ import { NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
 
 import { BaseChart } from './base-chart.component';
+import { AlluvialChartComponent } from './alluvial-chart.component';
 import { AreaChartComponent } from './area-chart.component';
 import { StackedAreaChartComponent } from './area-chart-stacked.component';
 import { SimpleBarChartComponent } from './bar-chart-simple.component';
@@ -29,6 +30,7 @@ import { WordCloudChartComponent } from './wordcloud-chart.component';
 	imports: [CommonModule],
 	declarations: [
 		BaseChart,
+		AlluvialChartComponent,
 		AreaChartComponent,
 		StackedAreaChartComponent,
 		SimpleBarChartComponent,
@@ -54,6 +56,7 @@ import { WordCloudChartComponent } from './wordcloud-chart.component';
 	],
 	exports: [
 		BaseChart,
+		AlluvialChartComponent,
 		AreaChartComponent,
 		StackedAreaChartComponent,
 		SimpleBarChartComponent,

packages/angular/src/index.ts

@@ -23,6 +23,7 @@ export * from './tree-chart.component';
 export * from './treemap-chart.component';
 export * from './circle-pack-chart.component';
 export * from './wordcloud-chart.component';
+export * from './alluvial-chart.component';
 
 // Diagrams
 export * from './diagrams/card-node/card-node.module';

packages/core/demo/data/CHART_TYPES.ts

@@ -1,4 +1,9 @@
 export default {
+	AlluvialChart: {
+		vanilla: 'AlluvialChart',
+		angular: 'ibm-alluvial-chart',
+		vue: 'ccv-alluvial-chart',
+	},
 	AreaChart: {
 		vanilla: 'AreaChart',
 		angular: 'ibm-area-chart',

packages/core/demo/data/alluvial.ts

@@ -0,0 +1,134 @@
+export const alluvialSimpleData = [
+	{ source: 'A', target: 'X', value: 3 },
+	{ source: 'A', target: 'Y', value: 5 },
+	{ source: 'A', target: 'Z', value: 8 },
+	{ source: 'B', target: 'X', value: 6 },
+	{ source: 'B', target: 'Y', value: 1 },
+	{ source: 'B', target: 'Z', value: 7 },
+	{ source: 'C', target: 'X', value: 5 },
+	{ source: 'C', target: 'Y', value: 5 },
+	{ source: 'C', target: 'Z', value: 1 },
+];
+
+export const alluvialSimpleOptions = {
+	title: 'Alluvial',
+	alluvial: {
+		units: 'GB',
+		nodes: [
+			{ name: 'A', category: 'Start' },
+			{ name: 'B', category: 'Start' },
+			{ name: 'C', category: 'Start' },
+			{ name: 'X', category: 'Finish' },
+			{ name: 'Y', category: 'Finish' },
+			{ name: 'Z', category: 'Finish' },
+		],
+	},
+};
+
+export const alluvialMultipleCategoryOptions = {
+	title: 'Alluvial (multiple categories)',
+	alluvial: {
+		nodes: [
+			{ name: '1st', category: 'Class' },
+			{ name: '2nd', category: 'Class' },
+			{ name: 'Crew', category: 'Class' },
+			{ name: 'Male', category: 'Sex' },
+			{ name: 'Female', category: 'Sex' },
+			{ name: 'Child', category: 'Age' },
+			{ name: 'Adult', category: 'Age' },
+			{ name: 'Yes', category: 'Survived' },
+			{ name: 'No', category: 'Survived' },
+		],
+	},
+};
+
+export const alluvialMultipleCategoryData = [
+	{
+		source: '1st',
+		target: 'Female',
+		value: 25,
+	},
+	{
+		source: '1st',
+		target: 'Male',
+		value: 35,
+	},
+	{
+		source: '2nd',
+		target: 'Female',
+		value: 35,
+	},
+	{
+		source: '2nd',
+		target: 'Male',
+		value: 50,
+	},
+	{
+		source: 'Crew',
+		target: 'Male',
+		value: 43,
+	},
+	{
+		source: 'Crew',
+		target: 'Female',
+		value: 18,
+	},
+	{
+		source: 'Male',
+		target: 'Child',
+		value: 38,
+	},
+	{
+		source: 'Male',
+		target: 'Adult',
+		value: 90,
+	},
+	{
+		source: 'Female',
+		target: 'Adult',
+		value: 52,
+	},
+	{
+		source: 'Female',
+		target: 'Child',
+		value: 26,
+	},
+	{
+		source: 'Child',
+		target: 'Yes',
+		value: 58,
+	},
+	{
+		source: 'Child',
+		target: 'No',
+		value: 6,
+	},
+	{
+		source: 'Adult',
+		target: 'Yes',
+		value: 22,
+	},
+	{
+		source: 'Adult',
+		target: 'No',
+		value: 120,
+	},
+];
+
+export const alluvialMonochromeData = alluvialSimpleData;
+
+export const alluvialMonochromeOptions = {
+	title: 'Alluvial (monochrome with custom node padding)',
+	alluvial: {
+		nodes: [
+			{ name: 'A', category: 'Start' },
+			{ name: 'B', category: 'Start' },
+			{ name: 'C', category: 'Start' },
+			{ name: 'X', category: 'Finish' },
+			{ name: 'Y', category: 'Finish' },
+			{ name: 'Z', category: 'Finish' },
+		],
+		monochrome: true,
+		nodePadding: 33,
+	},
+};

packages/core/demo/data/index.ts

@@ -22,6 +22,7 @@ import * as toolbarDemos from './toolbar';
 import * as wordCloudDemos from './wordcloud';
 import * as zoomBarDemos from './zoom-bar';
 import * as highScaleDemos from './high-scale';
+import * as alluvialDemos from './alluvial';
 
 export * from './area';
 export * from './bar';
@@ -46,6 +47,7 @@ export * from './toolbar';
 export * from './wordcloud';
 export * from './zoom-bar';
 export * from './high-scale';
+export * from './alluvial';
 
 import {
 	createChartSandbox,
@@ -1060,31 +1062,23 @@ const simpleChartDemos = [
 
 const complexChartDemos = [
 	{
-		title: 'Tree',
-		configs: {
-			excludeColorPaletteControl: true,
-		},
+		title: 'Alluvial',
 		demos: [
 			{
-				data: treeDemos.treeData,
-				options: treeDemos.dendogramOptions,
-				chartType: chartTypes.TreeChart,
+				options: alluvialDemos.alluvialSimpleOptions,
+				data: alluvialDemos.alluvialSimpleData,
+				chartType: chartTypes.AlluvialChart,
 				mainDemo: true,
 			},
 			{
-				data: treeDemos.treeData,
-				options: treeDemos.treeOptions,
-				chartType: chartTypes.TreeChart,
+				options: alluvialDemos.alluvialMultipleCategoryOptions,
+				data: alluvialDemos.alluvialMultipleCategoryData,
+				chartType: chartTypes.AlluvialChart,
 			},
-		],
-	},
-	{
-		title: 'Treemap',
-		demos: [
 			{
-				data: treemapDemos.treemapData,
-				options: treemapDemos.treemapOptions,
-				chartType: chartTypes.TreemapChart,
+				options: alluvialDemos.alluvialMonochromeOptions,
+				data: alluvialDemos.alluvialMonochromeData,
+				chartType: chartTypes.AlluvialChart,
 			},
 		],
 	},
@@ -1119,6 +1113,35 @@ const complexChartDemos = [
 			},
 		],
 	},
+	{
+		title: 'Tree',
+		configs: {
+			excludeColorPaletteControl: true,
+		},
+		demos: [
+			{
+				data: treeDemos.treeData,
+				options: treeDemos.dendogramOptions,
+				chartType: chartTypes.TreeChart,
+				mainDemo: true,
+			},
+			{
+				data: treeDemos.treeData,
+				options: treeDemos.treeOptions,
+				chartType: chartTypes.TreeChart,
+			},
+		],
+	},
+	{
+		title: 'Treemap',
+		demos: [
+			{
+				data: treemapDemos.treemapData,
+				options: treemapDemos.treemapOptions,
+				chartType: chartTypes.TreemapChart,
+			},
+		],
+	},
 ].map((demoGroup: any) => {
 	demoGroup.type = DemoGroupTypes.COMPLEX_CHART;
 

packages/core/package.json

@@ -53,6 +53,7 @@
 		"@carbon/utils-position": "1.1.1",
 		"carbon-components": "10.40.0",
 		"d3-cloud": "1.2.5",
+		"d3-sankey": "0.12.3",
 		"date-fns": "2.8.1",
 		"dom-to-image": "2.6.0",
 		"lodash-es": "4.17.21",

packages/core/src/charts/alluvial.ts

@@ -0,0 +1,50 @@
+// Internal Imports
+import { Chart } from '../chart';
+import * as Configuration from '../configuration';
+import { ChartConfig, AlluvialChartOptions } from '../interfaces/index';
+import { Tools } from '../tools';
+
+// Components
+import {
+	Alluvial,
+	// the imports below are needed because of typescript bug (error TS4029)
+	Tooltip,
+	Legend,
+	LayoutComponent,
+} from '../components/index';
+
+export class AlluvialChart extends Chart {
+	constructor(
+		holder: Element,
+		chartConfigs: ChartConfig<AlluvialChartOptions>
+	) {
+		super(holder, chartConfigs);
+
+		// Merge the default options for this chart
+		// With the user provided options
+		this.model.setOptions(
+			Tools.mergeDefaultChartOptions(
+				Configuration.options.alluvialChart,
+				chartConfigs.options
+			)
+		);
+
+		// Initialize data, services, components etc.
+		this.init(holder, chartConfigs);
+	}
+
+	getComponents() {
+		// Specify what to render inside the graph-frame
+		const graphFrameComponents: any = [
+			new Alluvial(this.model, this.services),
+		];
+
+		const components: any[] = this.getChartComponents(
+			graphFrameComponents,
+			{
+				excludeLegend: true,
+			}
+		);
+		return components;
+	}
+}

packages/core/src/charts/index.ts

@@ -20,3 +20,4 @@ export * from './tree';
 export * from './treemap';
 export * from './circle-pack';
 export * from './wordcloud';
+export * from './alluvial';